| Title: | Cuticle thickness affects dynamics of volatile emission from petunia flowers |
| Author(s): | Liao P; Ray S; Boachon B; Lynch JH; Deshpande A; McAdam S; Morgan JA; Dudareva N; |
| Address: | "Department of Biochemistry, Purdue University, West Lafayette, IN, USA. Davidson School of Chemical Engineering, Purdue University, West Lafayette, IN, USA. BVpam FRE 3727, Universite de Lyon, Universite Jean Monnet Saint-Etienne, CNRS, Saint-Etienne, France. Purdue Center for Plant Biology, Purdue University, West Lafayette, IN, USA. Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN, USA. Department of Biochemistry, Purdue University, West Lafayette, IN, USA. dudareva@purdue.edu. Purdue Center for Plant Biology, Purdue University, West Lafayette, IN, USA. dudareva@purdue.edu. Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, IN, USA. dudareva@purdue.edu" |
| DOI: | 10.1038/s41589-020-00670-w |
| ISSN/ISBN: | 1552-4469 (Electronic) 1552-4450 (Linking) |
| Abstract: | "The plant cuticle is the final barrier for volatile organic compounds (VOCs) to cross for release to the atmosphere, yet its role in the emission process is poorly understood. Here, using a combination of reverse-genetic and chemical approaches, we demonstrate that the cuticle imposes substantial resistance to VOC mass transfer, acting as a sink/concentrator for VOCs and hence protecting cells from the potentially toxic internal accumulation of these hydrophobic compounds. Reduction in cuticle thickness has differential effects on individual VOCs depending on their volatility, and leads to their internal cellular redistribution, a shift in mass transfer resistance sources and altered VOC synthesis. These results reveal that the cuticle is not simply a passive diffusion barrier for VOCs to cross, but plays the aforementioned complex roles in the emission process as an integral member of the overall VOC network" |
| Keywords: | "Down-Regulation Flowers/*chemistry Genes, Plant/genetics Petunia/*chemistry Phenylalanine/chemistry RNA Interference Solvents Volatile Organic Compounds/*chemistry;" |
| Notes: | "MedlineLiao, Pan Ray, Shaunak Boachon, Benoit Lynch, Joseph H Deshpande, Arnav McAdam, Scott Morgan, John A Dudareva, Natalia eng Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. 2020/10/21 Nat Chem Biol. 2021 Feb; 17(2):138-145. doi: 10.1038/s41589-020-00670-w. Epub 2020 Oct 19" |
